|Publication number||US7913692 B2|
|Application number||US 10/572,813|
|Publication date||Mar 29, 2011|
|Filing date||Sep 24, 2004|
|Priority date||Sep 25, 2003|
|Also published as||CN1859940A, CN1859940B, CN101816814A, CN101816814B, CN102309807A, EP1675639A1, EP1675639A4, US8375944, US8844524, US20060237013, US20100108070, US20130133661, US20140360504, WO2005028009A1|
|Publication number||10572813, 572813, PCT/2004/1309, PCT/AU/2004/001309, PCT/AU/2004/01309, PCT/AU/4/001309, PCT/AU/4/01309, PCT/AU2004/001309, PCT/AU2004/01309, PCT/AU2004001309, PCT/AU200401309, PCT/AU4/001309, PCT/AU4/01309, PCT/AU4001309, PCT/AU401309, US 7913692 B2, US 7913692B2, US-B2-7913692, US7913692 B2, US7913692B2|
|Inventors||Philip Rodney Kwok|
|Original Assignee||Resmed Limited|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (82), Non-Patent Citations (9), Referenced by (17), Classifications (19), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is the US national phase of international application number PCT/AU2004/001309 filed 24 Sep. 2004, which designated the U.S. and claims priority to U.S. Provisional Application No. 60/505,718 filed 25 Sep. 2003, the entire contents of each of which are hereby incorporated by reference.
1. Field of the Invention
The present invention relates to ventilators, e.g., continuous positive air pressure (“CPAP”) systems comprising a mask and an air flow generator, wherein the air flow generator is mountable to the mask's wearer. In one embodiment, the present invention provides CPAP systems wherein an air flow generator is mounted on the mask. In other embodiments, the air flow generator may be provided to the body of the wearer, e.g., the arm, leg, chest or waist, and a short air delivery tube can be used to connect the mask with the air flow generator.
2. Description of Related Art
CPAP administration is commonly used to treat respiratory conditions such as obstructive sleep apnea. The procedure for CPAP administration typically involves sealingly engaging a mask over a patient's nasal and/or oral region and supplying pressurized air to a chamber formed by the interior of the mask. In conventional systems, the air is supplied to the mask by an air flow generator typically placed in proximity to the patient's bed. An air delivery tube is thus needed to deliver air generated by the air flow generator to the mask.
There are two main sources of instability of a mask system during use or sleep. Normal patient movement can create instability, for example, a patient rolling on his or her side, which may cause the mask to interfere with the bedding material. Another concern of using an air delivery tube that is connected to an apparatus away from the patient is so-called “tubing drag”, which refers to a drag force on the air delivery tube which is draped over the back or side of the bed. Tubing drag can be created or complicated by movement of the wearer. Tubing drag may cause relative movement between the mask seal and the patient's face during the CPAP administration and produce leaks and/or discomfort.
Another concern involving the air delivery tube is the length thereof (often about 2 meters or more), which may impart a lag in the response and rise times in delivering pressured air from the air flow generator to the mask. Increased flow impedance and/or pressure drop due to diameter and length of tubing may also necessitate a larger blower motor to compensate for the pressure drop along the air delivery tube.
U.S. Pat. Nos. 4,590,951; 5,372,130; and 6,435,184 describe masks for safety applications.
Aspects of the present invention include addressing the concerns in the art, e.g., by reducing or eliminating the risk of tubing drag during CPAP administration.
A further aspect of the present invention is to provide the wearer with a greater freedom of movement in bed without compromising seal and/or comfort.
Another aspect of the present invention includes reducing or eliminating the lag in response/rise times in delivering pressured air from the generator to the mask.
In one embodiment, a ventilator or CPAP system comprises a mask and an air flow generator, wherein both the mask and the air flow generator are provided to or on the wearer. In one embodiment, the mask is configured to be fitted to the patient's face and the air flow generator is mountable to the wearer's body. The air flow generator may be provided directly to the mask.
According to one embodiment a CPAP system comprises a face mask and an air flow generator, wherein the air flow generator is mounted on the face mask.
In a further embodiment, a ventilator or CPAP system comprises:
In embodiments, a ventilator or CPAP system includes an air flow generator able to be located sufficiently close to a wearer so that an air delivery tube may be less than 1.5 meters in length.
In one embodiment, a ventilator or CPAP system comprises:
a face mask having an inlet port,
an air flow generator having an outlet, and
at least one air delivery tube for delivering breathable gas from the gas outlet to the inlet port,
wherein the at least one air delivery tube does not exceed about 1.5 meters in length. The at least one air delivery tube may include two or more air delivery tubes having a combined overall length of not more than about 1.5 meters.
In a further embodiment, a ventilator or CPAP system comprises:
Additional aspects, advantages and features of the present invention are set forth in this specification, and in part will become apparent to those skilled in the art on examination of the following, or may be learned by practice of the invention. The inventions disclosed in this application are not limited to any particular set of or combination of aspects, advantages and features. It is contemplated that various combinations of the stated aspects, advantages and features make up the inventions disclosed in this application.
A CPAP system includes a mask and an air flow generator, wherein the air flow generator is provided to a wearer of the mask. In one embodiment, the air flow generator is mountable to a wearer's body (including a wearer's clothing). In another embodiment, the air flow generator is mounted on or provided to the mask.
Figures 1-11B show several embodiments of CPAP systems according to the present invention.
Mask cushion 30 is preferably made of a soft material (e.g. a rubber material, such as a silicone elastomer) and sealingly connects to the wearer's face to form the air chamber between the wearer's face and the mask 60. The shell can be made of a relatively hard plastic, although the shell can be made of the same material as the cushion 30, in some applications. Examples of cushions 30 are described in, for instance, U.S. Pat. No. 6,513,526, assigned to ResMed Limited, which is hereby incorporated in its entirety by reference. Commercial examples of mask 60 include, for instance, the Mirage® Full Face Mask Series II from ResMed Limited (not taking into account adjustments described below in more detail).
Headgear connectors 50 are provided to the shell 46. Headgear connectors are designed to receive headgear straps for securing CPAP system 10 to a wearer's head (securing straps 55 are shown in
The air chamber formed between a wearer's face and the interior of mask 60 receives breathable gas (e.g. air) through air inlet port 56 (see
Motor 100 drives impeller 120. Power is supplied to motor 100 via power cord 110 and the motor is fixedly secured within the impeller housing by tightening screw 132. Examples of electrical motors include, for instance, miniature bullet motors commercially available from, e.g., Servo Magnetics Inc., of California. However, various types of motors may be used, including for instance pneumatic air powered motors in which case the energy source would be a tiny air line instead of an electrical pulse. The motor assembly may include multiple motors or single motors with multiple impellers, double ended impellers, etc. Other possibilities include separate systems which can deliver prescribed air pressure. In another variant, another motor impeller assembly can be utilized to modify, for instance, if an inflatable cuff is provided to react to stimulus or sensed parameters like leak problems. A separate motor impeller can be used to control positioning of the mask relative to the face or the profile of the cushion seal.
Examples of impellers include, for instance, the S6 CPAP impeller from ResMed Limited. Various impellers may be used, however, such as axial fans, radial fans, centrifugal fans, etc. or any new technology able to deliver the required flow of gas such as air.
The power cord 110 may receive power from any suitable power source, e.g., a wall power outlet, wall mounted transformers, a battery pack or other power storage medium. In one embodiment, power cord 110 includes sensor cables to register and/or adjust to data received from sensors that may be provided in the mask (e.g. CO2, O2, humidity, pressure, flow, and/or temperature sensors). In one embodiment, the monitoring of sensors occurs via infrared technology or radio waves. A control box may be provided to adjust, e.g., the motor speed, e.g., for bi-level treatment, or other parameters relative to the information received through the sensors. Other embodiments may be to sense leak and adjust motor speed and thus delivery pressure or flow accordingly.
The power cord 110 can be connected to a small controller chip (not shown) integrated with an electrical transformer plugged into a power outlet. This provides greater flexibility, freedom of movement of the wearer, increased versatility during traveling, etc. Also, there are less components at the mask interface, less overall size of the system and potentially greater stability. The system may be used for bi-level treatment or general ventilatory applications, e.g., where the magnitude of the pressurized air varies. The system may also provide faster response and rise times and eliminate or at least reduce lag associated with air delivery tubes typically having a length of 2 m or more. The system may be easier to use from the perspective of a physician, a dealer or clinician, in that only one rather than numerous components need to be fitted for the wearer.
Another embodiment provides the ability to change the strap adjusting points; the ability to modify the fit of the mask relative to the face through the integrated sensing. For example, if there is a leak generated by the mask and a sensor, e.g., a pressure transducer 67 (
Sensing flow or pressure of the mask system will increase reaction time and having a motor and an impeller assembly mounted directly into a mask system would mean that reaction times to pressure and flow changes would be very rapid; therefore there is improved synchrony of delivered gas to the wearer. Presently, flow generators essentially need to predict when a patient is about to breathe in or have some delay or lag, for example, by pressure sensors mounted to the flow generator. By contrast, one aspect of the present embodiment allows the mask system to react very quickly, which provides excellent synchrony of the flow to a patient and this is key to treat patients especially those with respiratory insufficiency who require very good synchrony of flow generator flow pattern to a breathing patient.
Air flow generator 20, e.g., second part 80, is mounted on mask 60, e.g., with four screws 140 (only two are shown in
In one embodiment, such as the embodiment shown in
In one embodiment, air flow generator 20A and battery pack 150 are attached to strap 160 using clips 162A and 162B (see
In yet another variant (not shown), the motor assembly may be mounted or provided or combined to a headgear system, with short tubing running to the mask. The headgear system could act as form a of vibration damping. Motors invariably vibrate due to imbalances or during motion. Isolating this vibration from the wearer will reduce irritation and noise. As the head is sensitive to vibration, some form of motor and/or impeller isolation is preferable. A damping system may be used; for example a visco-elastic/soft foam “cushion” between the head and flow generator would provide some benefit.
In another aspect, a motor can provide a heat sink to provide ability to warm patient breathing air temperature to improve breathing comfort. An additional aspect is to be able to control the temperature based on ambient conditions, e.g., using a feedback loop. These aspects may be incorporated as part of any of the above embodiments.
While the invention has been described by way of illustrative embodiments, it is understood that the words which have been used herein are words of description, rather than words of limitation. Changes may be made without departing from the scope and spirit of the embodiments. For example, while embodiments have been described as relation to CPAP application, it is to be understood that the features described herein may also have application in the general ventilation or respiratory arts. In addition, the system can be used for children and adults of all ages.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3167070||Jun 14, 1961||Jan 26, 1965||Leslie Silverman||Respirator with positive air seal|
|US4133308||Feb 24, 1977||Jan 9, 1979||Racal-Amplivox Communications Ltd.||Protective devices|
|US4136688||Mar 8, 1977||Jan 30, 1979||Racal-Amplivox Communications Ltd.||Protective devices|
|US4233972||May 8, 1978||Nov 18, 1980||Wolfgang Hauff||Portable air filtering and breathing assist device|
|US4297999||Jul 19, 1979||Nov 3, 1981||Kitrell John V||Portable resuscitation apparatus|
|US4590951||Jun 6, 1984||May 27, 1986||Racal Safety Limited||Breathing apparatus|
|US4886056||Mar 20, 1989||Dec 12, 1989||Sabre Safety Limited||Breathing apparatus|
|US4951662||May 8, 1989||Aug 28, 1990||Townsend Jr Andrew L||Air circulating surgical mask unit|
|US5036842||Dec 26, 1989||Aug 6, 1991||Dragerwerk Aktiengesellschaft||Respirator with blower support and regeneration of the breathing filter|
|US5048516||Jul 14, 1988||Sep 17, 1991||Soederberg Stig||Respiratory mask|
|US5113853||Nov 7, 1988||May 19, 1992||Dickey Jonathan B||Helmet with filtered air supply|
|US5154168 *||Apr 15, 1991||Oct 13, 1992||Dragerwerk Aktiengesellschaft||Respirator mask|
|US5303701||Sep 25, 1992||Apr 19, 1994||Dragerwerk Ag||Blower-supported gas mask and breathing equipment with an attachable control part|
|US5318020||Aug 12, 1992||Jun 7, 1994||Intertechnique||Equipment for respiratory protection against pollutants|
|US5372130||Feb 26, 1992||Dec 13, 1994||Djs&T Limited Partnership||Face mask assembly and method having a fan and replaceable filter|
|US5517986 *||Sep 28, 1993||May 21, 1996||Respironics, Inc.||Two-point/four-point adjustable headgear for gas delivery mask|
|US5533500||Mar 4, 1992||Jul 9, 1996||Her-Mou; Lin||Helmet with an air filtering device|
|US6050262 *||Jul 8, 1998||Apr 18, 2000||Giat Industries||Overpressure ventilation device for a gas mask|
|US6435184||Sep 1, 2000||Aug 20, 2002||Tien Lu Ho||Gas mask structure|
|US6513526||May 21, 1999||Feb 4, 2003||Resmed Limited||Full-face mask and mask cushion therefor|
|US6561190||Feb 10, 1998||May 13, 2003||Resmed Limited||Mask and a vent assembly therefor|
|US6561191||Dec 1, 1999||May 13, 2003||Resmed Limited||Mask and a vent assembly therefor|
|US6705314||Nov 8, 1999||Mar 16, 2004||Caradyne (R&D) Limited||Apparatus and method for relieving dyspnoea|
|US6772760||Dec 19, 2002||Aug 10, 2004||Resmed Limited||Mask with gusset|
|US6772762||May 23, 2001||Aug 10, 2004||Gregory Hubert Piesinger||Personal powered air filtration, sterilization, and conditioning system|
|US6895959||Apr 28, 2004||May 24, 2005||Dräger Safety AG & Co. KGaA||Gas mask and breathing equipment with a compressor|
|US6895962||Nov 27, 2002||May 24, 2005||Dräger Medical AG & Co. KGaA||Device for supporting respiration|
|US7195015||Apr 8, 2002||Mar 27, 2007||Koken, Ltd.||Breathing apparatus|
|US20020029777||Sep 6, 2001||Mar 14, 2002||Siegfried Zimprich||Apparatus for supplying respiratory gas to a parachute jumper|
|US20030062045||Nov 15, 2002||Apr 3, 2003||Respironics, Inc.||Medical ventilator|
|US20030154983||Feb 15, 2002||Aug 21, 2003||Marx Alvin J.||Personal air filtering device|
|US20030172930||Nov 27, 2002||Sep 18, 2003||Gotz Kullik||Device for supporting respiration|
|US20040079373||Dec 2, 2002||Apr 29, 2004||Yamamoto Kogaku Co., Ltd.||Respiration protecting apparatus|
|US20040216741||Jun 1, 2004||Nov 4, 2004||Arnott Richard J.||Apparatus for maintaining airway patency|
|US20040237965||Jun 3, 2004||Dec 2, 2004||Sleepup Ltd.||Devices, for preventing collapse of the upper airway, methods for use thereof and systems and articles of manufacture including same|
|US20050034724||Mar 9, 2004||Feb 17, 2005||Caradyne (R&D) Limited||Apparatus and method for relieving dyspnoea|
|US20050284481||Mar 17, 2005||Dec 29, 2005||Dragerwerk Aktiengesellschaft||Breathing mask with breathing gas supply through the strap|
|US20060096596||Nov 5, 2004||May 11, 2006||Occhialini James M||Wearable system for positive airway pressure therapy|
|US20060102184||Oct 19, 2005||May 18, 2006||Dragerwerk Aktiengesellschaft||Breathing mask with integrated suction area|
|US20060150973||Jul 5, 2004||Jul 13, 2006||Societe D'applications Industrielles||Breathing assistance device|
|US20060213516||May 13, 2005||Sep 28, 2006||Leslie Hoffman||Portable continuous positive airway pressure system|
|US20060237013||Sep 24, 2004||Oct 26, 2006||Kwok Philip R||Ventilator mask and system|
|US20070000493||Jun 1, 2006||Jan 4, 2007||Cox Kingsley J||Apparatus for maintaining airway patency|
|US20070163600||Jan 4, 2007||Jul 19, 2007||Leslie Hoffman||User interface and head gear for a continuous positive airway pressure device|
|US20070246045||Apr 17, 2007||Oct 25, 2007||Leslie Hoffman||Continuous positive airway pressure device and configuration for employing same|
|US20070251527||Apr 23, 2007||Nov 1, 2007||Tiara Medical Systems, Inc.||Self-contained respiratory therapy apparatus for enhanced patient compliance and therapeutic efficacy|
|US20070277825||Apr 10, 2007||Dec 6, 2007||Bordewick Steven S||Apparatus and methods for providing humidity in respiratory therapy|
|US20070277827||Apr 10, 2007||Dec 6, 2007||Bordewick Steven S||Apparatus and methods for administration of positive airway pressure therapies|
|US20080060649||Jul 27, 2007||Mar 13, 2008||Resmed Limited||Delivery of respiratory therapy|
|US20080178879||Jan 29, 2007||Jul 31, 2008||Braebon Medical Corporation||Impeller for a wearable positive airway pressure device|
|US20080216831||Mar 8, 2007||Sep 11, 2008||Mcginnis William J||Standalone cpap device and method of using|
|US20080216835||Oct 30, 2007||Sep 11, 2008||Neurophysiological Concepts Llc||Standalone cpap device and method of using|
|US20080304986||Jun 5, 2008||Dec 11, 2008||Resmed Limited||Blower with bearing tube|
|US20090078255||Sep 21, 2007||Mar 26, 2009||Bowman Bruce R||Methods for pressure regulation in positive pressure respiratory therapy|
|US20090078258||Sep 21, 2007||Mar 26, 2009||Bowman Bruce R||Pressure regulation methods for positive pressure respiratory therapy|
|DE10261602A1||Dec 28, 2002||Jul 8, 2004||Yamamoto Kogaku Co., Ltd.||Respirator for use in the presence of toxic gas or dust-laden environment has two air filters incorporating electric blower fans|
|EP0066451A1||May 26, 1982||Dec 8, 1982||Racal Safety Limited||Improvements in and relating to power assisted air-purifying respirators|
|EP0164946A2||May 23, 1985||Dec 18, 1985||Racal Safety Limited||Improvements in and relating to respirators|
|EP0334555A2||Mar 17, 1989||Sep 27, 1989||Sabre Safety Limited||Breathing apparatus|
|EP0528733A1||Aug 19, 1992||Feb 24, 1993||Intertechnique||Pollutants breathing protection equipment|
|EP0558147A1||Feb 24, 1993||Sep 1, 1993||D.J.S. & T. LIMITED PARTNERSHIP||Face mask assembly and method|
|EP1318307A1||Dec 10, 2002||Jun 11, 2003||Resmed Limited||Double-ended blower and volutes therefor|
|EP1655052A2||Nov 4, 2005||May 10, 2006||Air Products and Chemicals, Inc.||Wearable system for positive airway pressure therapy|
|FR2854807A1||Title not available|
|FR2867390A1||Title not available|
|GB2209474A||Title not available|
|GB2215216A||Title not available|
|GB2222777A||Title not available|
|JP2004344395A||Title not available|
|WO1999013931A1||Sep 18, 1998||Mar 25, 1999||Caradyne R & D Limited||Portable respirator|
|WO2005028009A1||Sep 24, 2004||Mar 31, 2005||Resmed Ltd||Ventilator mask and system|
|WO2005063328A1||Dec 24, 2004||Jul 14, 2005||Resmed Ltd||Compact oronasal patient interface|
|WO2007028877A2||Sep 1, 2006||Mar 15, 2007||Philippe Perez||Portable gas dispensing device|
|WO2007048205A1||Oct 27, 2006||May 3, 2007||Resmed Ltd||Blower motor with flexible support sleeve|
|WO2007048206A1||Oct 27, 2006||May 3, 2007||Resmed Ltd||Single or multiple stage blower and nested volute(s) and/or impeller(s) therefor|
|WO2007117716A2||Apr 10, 2007||Oct 18, 2007||Aeiomed Inc||Apparatus and methods for administration of positive airway pressure therapies|
|WO2007124108A2||Apr 23, 2007||Nov 1, 2007||Tiara Medical Systems Inc||Self-contained respiratory therapy apparatus for enhanced patient compliance and therapeutic efficacy|
|WO2007134405A1||May 24, 2007||Nov 29, 2007||Resmed Ltd||Compact low noise efficient blower for cpap devices|
|WO2008028247A1||Sep 6, 2007||Mar 13, 2008||Resmed Ltd||Mask and flow generator system|
|WO2008070989A1||Dec 13, 2007||Jun 19, 2008||Ludwik Fedorko||Method and apparatus for ventilation assistance|
|WO2008108789A1||Jun 5, 2007||Sep 12, 2008||Neurophysiological Concepts Ll||Standalone cpap device and method of using|
|WO2010003064A1||Jul 2, 2009||Jan 7, 2010||Aeiomed, Inc.||Methods for battery power management of positive airway pressure apparatus|
|1||Chinese Office Action and English Translation for corresponding Chinese Application No. 200480028014.9, issued Oct. 24, 2008, 15 pages.|
|2||Extended European Search Report mailed May 20, 2009 in European Application No. 09001343.4.|
|3||International Search Report for PCT/AU2004/001309 dated Oct. 22, 2004.|
|4||N. Tandon, "Noise-Reducing Designs of Machines and Structures," Sadhana,, vol. 25, Part 3, Jun. 2000, pp. 331-339.|
|5||N. Tandon, "Noise-Reducing Designs of Machines and Structures," Sādhanā,, vol. 25, Part 3, Jun. 2000, pp. 331-339.|
|6||U.S. Appl. No. 29/274,504, Apr. 2007, Kenyon.|
|7||U.S. Appl. No. 29/274,505, Apr. 2007, Kenyon.|
|8||U.S. Appl. No. 29/274,506, Apr. 2007, Kenyon.|
|9||U.S. Appl. No. 60/494,119, Aug. 2003, Gunaratnam et al.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8327846||Sep 26, 2011||Dec 11, 2012||Hancock Medical, Inc.||Positive airway pressure system with head position control|
|US8336546||Sep 26, 2011||Dec 25, 2012||Hancock Medical, Inc.||Positive airway pressure system with head control|
|US8397727 *||Aug 22, 2008||Mar 19, 2013||Resmed Limited||Mask vent|
|US8517017||Jan 8, 2010||Aug 27, 2013||Hancock Medical, Inc.||Self-contained, intermittent positive airway pressure systems and methods for treating sleep apnea, snoring, and other respiratory disorders|
|US8631791||Aug 16, 2011||Jan 21, 2014||Somnetics Global Pte. Ltd.||Apparatus and methods for administration of positive airway pressure therapies|
|US8851075||Feb 22, 2013||Oct 7, 2014||Resmed Limited||Mask vent|
|US8919344||Nov 25, 2013||Dec 30, 2014||Hancock Medical, Inc.||Positive airway pressure system with head position control|
|US8925546||Nov 2, 2012||Jan 6, 2015||Hancock Medical, Inc.||Positive airway pressure system with head position control|
|US8973576||Nov 19, 2010||Mar 10, 2015||Resmed Motor Technologies Inc||Blower|
|US9072856||Aug 8, 2011||Jul 7, 2015||Paula Reynolds||CPAP stabilizing hat|
|US9084859||Jan 9, 2012||Jul 21, 2015||Sleepnea Llc||Energy-harvesting respiratory method and device|
|US9132252||Aug 27, 2010||Sep 15, 2015||Resmed Limited||PAP system|
|US9180267||Dec 15, 2014||Nov 10, 2015||Hancock Medical, Inc.||Positive airway pressure system with head position control|
|US20090050156 *||Aug 22, 2008||Feb 26, 2009||Resmed Limited||Mask vent|
|US20090071478 *||Sep 17, 2008||Mar 19, 2009||General Electric Company||Ventilator|
|US20090320842 *||Sep 6, 2007||Dec 31, 2009||Renee Frances Doherty||Mask and flow generator system|
|US20100170513 *||Jul 8, 2010||Bowditch Nathaniel L||Self-contained, intermittent positive airway pressure systems and methods for treating sleep apnea, snoring, and other respiratory disorders|
|U.S. Classification||128/206.21, 128/206.28|
|International Classification||A61M11/00, A61M16/00, A61M16/06|
|Cooperative Classification||A61M16/0683, A61M16/0605, A61M16/0875, A61M16/06, A61M2230/435, A61M2016/0036, A61M2016/0021, A61M16/0057, A61M2230/50, A61M2205/8206, A61M2230/432, A61M16/0069|
|European Classification||A61M16/06S, A61M16/06|
|Oct 20, 2006||AS||Assignment|
Owner name: RESMED LIMITED, AUSTRIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KWOK, PHILIP RODNEY;REEL/FRAME:018443/0907
Effective date: 20060905
|Sep 3, 2014||FPAY||Fee payment|
Year of fee payment: 4